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- Title
Constructing dwarf rice.
- Authors
Hedden, Peter
- Abstract
In this article, researchers describe a strategy for producing dwarf plants without detrimental consequences for grain development. Although they used rice as their model, the method can, in principle, be adopted for other species. Researchers ectopically expressed a gene encoding gibberellin (GA) 2-oxidase, an enzyme that deactivates the GA plant growth hormones. These hormones control a broad spectrum of physiological processes, including elongation of the stem and development of reproductive organs. GAs are major targets for control of vegetative growth in crop plants and, indeed, growth retardants act by inhibiting their biosynthesis. The semi-dwarf genes of rice have recently been shown to correspond to mutant alleles of a GA-biosynthetic gene, whereas the reduced height genes of wheat contain gain-of-function mutations that cause constitutive repression of GA mediated growth processes.
- Subjects
DWARF plants; MINIATURE plants; PLANTS; PLANT hormones; GIBBERELLINS; WHEAT
- Publication
Nature Biotechnology, 2003, Vol 21, Issue 8, p873
- ISSN
1087-0156
- Publication type
Article
- DOI
10.1038/nbt0803-873